<!--
 * new page
 * @author: eminem89
 * @since: 2023-12-24
 * Person.vue
-->
<template>
    <div class="person">
        <h1>情况三：监视reactive定义的对象类型数据</h1>
        <h2>姓名:{{ person.name }}</h2>
        <h2>年龄:{{ person.age }}</h2>
        <button @click="changeName">修改名字</button>
        <button @click="changeAge">修改年龄</button>
        <button @click="changePerson">修改Person</button>
    </div>
</template>

<script setup lang="ts" name="Person">
import { reactive, watch } from 'vue';
//数据
let person = reactive({
    name: '张三',
    age: 18,
});

function changeName() {
    person.name += '~';
}
function changeAge() {
    person.age += 1;
}
function changePerson() {
    Object.assign(person, { name: '李四', age: 90 });
}
// 监视，情况三：监视【reactive】定义的【对象类型】数据，且默认是开启深度监视的
watch(person, (newValue, oldValue) => {
    console.log('person变化了', newValue, oldValue);
});
</script>

<style scoped>
.person {
    background-color: skyblue;
    box-shadow: 0 0 10px;
    border-radius: 10px;
    padding: 20px;
}

button {
    margin: 0 5px;
}
</style>
